Transform Invoices into
Structured JSON Instantly Extract Invoice Data

Convert PDF invoices and scanned documents into structured JSON format. Perfect for automated processing, accounting systems integration, and financial data extraction.

Why Convert Invoices to JSON?

Transform any invoice into structured data ready for your systems:

  • Automatic extraction of invoice details
  • Support for multiple invoice formats
  • Ready for accounting system integration

Supported Input Formats

Our invoice parser supports multiple document formats:

  • PDF Invoices (digital and scanned)
  • Image formats (PNG, JPG, TIFF)
  • Digital invoice formats (XML, HTML)

See Invoice to JSON Conversion in Action

Sample Invoice Input
Sample Invoice showing company details, line items, and total amount
Original PDF Invoice PDF Format
Output
Structured JSON Result
{
  "invoice": {
    "company": "East Repair Inc.",
    "customer": {
      "name": "John Smith",
      "billing_address": "New York",
      "shipping_address": "Cambridge, MA"
    },
    "details": {
      "issue_date": "2019-02-11",
      "invoice_number": "US-001",
      "due_date": "2019-02-26"
    },
    "items": [
      {
        "description": "Front and rear brake cables",
        "quantity": 1,
        "unit_price": 100.00,
        "total_price": 100.00
      },
      {
        "description": "New set of pedal arms",
        "quantity": 2,
        "unit_price": 15.00,
        "total_price": 30.00
      },
      {
        "description": "Labor (3 hours)",
        "quantity": 3,
        "unit_price": 5.00,
        "total_price": 15.00
      }
    ],
    "subtotal": 145.00,
    "sales_tax": {
      "rate": 6.25,
      "amount": 9.06
    },
    "total_due": 154.06,
    "terms": {
      "payment_due": "15 days",
      "payable_to": "East Repair Inc."
    },
    "signature": "John Smith",
    "purpose": "Formal request for payment for bicycle repair services rendered."
  }
}
Structured data ready for integration
Accurate data extraction

API Integration Guide

1

Upload Invoice

curl -X POST \
  -H "Authorization: Token YOUR_TOKEN" \
  -F "file=@/path/to/invoice.pdf" \
  https://monkt.com/api/transformations/

Response:

{
  "success": true,
  "result": {
    "transformations": [{
      "uuid": "0974aa22-bc2b-4994-bc2f-0b4020bbe846",
      "status": "completed",
      "created": "2024-12-30 06:57:20"
    }]
  }
}
2

Define JSON Schema

Define any schema that matches your needs. Extract only the fields you care about.

curl -X POST \
  -H "Authorization: Token YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Custom Invoice Schema",
    "schema": {
      "type": "object",
      "properties": {
        "invoice_number": {"type": "string"},
        "amount": {"type": "number"}
      }
    }
  }' \
  https://monkt.com/api/schemas/

Response:

{
  "success": true,
  "result": {
    "uuid": "1b5baa64-52ea-4f3d-8792-4852e24eacce",
    "name": "Custom Invoice Schema"
  }
}
3

Get Structured JSON

curl -X POST \
  -H "Authorization: Token YOUR_TOKEN" \
  https://monkt.com/api/transformations/{transformation_uuid}/json/{schema_uuid}/

Response:

{
  "success": true,
  "result": {
    "invoice_number": "INV-2024-001",
    "amount": 2794.00
  }
}
Usage Information

Track your API usage and limits in the response headers or info object:
• Transformations Used: 203/250
• Days Until Reset: 27
• Plan: Free

Learn More About Invoice Processing

Watch our detailed guide on how to effectively process and convert invoices to JSON format.

Step-by-Step Guide

Detailed walkthrough of the invoice processing workflow

Best Practices

Learn optimal techniques for invoice data extraction

Pro Tips

Expert insights for handling complex invoices

Understanding Invoice to JSON Conversion

Converting invoices to JSON transforms unstructured billing documents into machine-readable data that can be easily processed and integrated into financial systems. Our advanced OCR and AI technologies ensure accurate extraction of critical invoice information.

Header Information Extraction

The system automatically identifies and extracts key invoice header details including invoice numbers, dates, payment terms, and company information. Advanced entity recognition ensures accurate capture of business names, addresses, and tax identification numbers.

Line Item Processing

Sophisticated table detection algorithms identify and extract line items, maintaining the relationship between descriptions, quantities, unit prices, and totals. The system handles complex table layouts, multiple pages, and various formatting styles while preserving data accuracy.

Financial Calculations

The converter automatically validates financial calculations, including subtotals, taxes, discounts, and final amounts. Built-in mathematical verification ensures consistency between line items and totals, flagging any discrepancies for review.

Tax and Currency Handling

Multiple tax rates, currency formats, and international billing standards are supported. The system correctly identifies and processes VAT/GST information, currency symbols, and exchange rates, ensuring accurate financial data representation in the JSON output.

Payment Information

Payment-related details including terms, due dates, bank account information, and payment methods are extracted and structured. The system maintains the security of sensitive financial data while providing necessary payment processing information.

Additional Fields and Custom Data

Purchase order numbers, reference codes, project codes, and custom fields are identified and included in the JSON structure. The system can be configured to recognize and extract organization-specific information and formatting.

Quality Assurance

Whether you're automating accounts payable, integrating with accounting systems, or analyzing financial data, converting invoices to JSON provides the structured format needed for modern financial operations. The combination of accurate extraction, comprehensive validation, and flexible output formatting ensures reliable processing of your invoice documents.

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Frequently Asked Questions about Invoice to JSON Conversion

What types of invoices can I convert to JSON?

We support various invoice formats including PDF (both digital and scanned), images (PNG, JPG, TIFF), and digital formats (XML, HTML). Our system can handle invoices from different countries and in multiple languages.

How accurate is the invoice data extraction?

Our AI-powered system achieves over 95% accuracy in data extraction. For optimal results, we recommend using clear, well-scanned documents. Each extraction undergoes multiple validation checks to ensure data quality.

Can I customize the JSON output format?

Yes! You can define custom JSON schemas to extract only the fields you need. This allows you to match your existing system's requirements and integrate seamlessly with your workflow.

How do I integrate this with my accounting system?

Our API provides standardized JSON output that can be integrated with popular accounting systems like QuickBooks, Xero, and SAP. We provide SDKs and detailed integration guides for major programming languages.

What about data security and privacy?

We take security seriously. All uploads are encrypted using TLS 1.3, and we process data in isolated environments. We are GDPR compliant and automatically delete processed documents after 24 hours.